FOCUS Contents

 
Spring and Summer Editions 1998
© 1998

TABLE OF CONTENTS
 Introduction to the Special Issue:
Elements of Geometry in the Learning of Mathematics
Vicki Schell
 Proof as Explanation in Geometry
Gila Hanna
 Is Symmetry an Intuitive Basis
for Proof in Euclidean Geometry?
Shlomo Vinner and Evgeny Kopelman
 On the Assessment of the van Hiele Levels of Reasoning
Angel Gutierrez and Adela Jaime
Development of Concepts of Geometric Figures
in a Specially Designed Logo Computer Environment
Douglas H. Clements, Julie Sarama, and Michael T. Battista
Imagery and Mathematics Learning
Grayson H. Wheatley
Geometry and Metacognition:
An Analysis of Piaget's and van Hiele's Perspectives
Eric Pandiscio and Robert E. Orton
A Twist of the Tetrahedron:
The Geometery Enhancement Models Institute Venture
Sheryl A. Maxwell and Vicki J. Schell

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